what types of waves are the BLUE waves? (the orange circle is the core)
a.primary waves
b.both s-waves and P-waves
c. secondary waved
d.none of the above

2. if the earth did NOT have liquid outer core, how would earthquake waves travel differently?

a.shadow zones would not exist
b. s waves would travel faster than P wave
c. P and S waves would be both absorbed
d.only S waves would travel through earth's core


3. (refer to the figure below) why only p waves were recorded at seismic station C?
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